package com.itheima.service;

import com.itheima.pojo.Student;

import java.util.List;


public interface StudentService {
    //增
    public int add(Student student);
    //改
    public int update(Student student);
    //删
    public int delete(Integer id);
    //查单个
    Student findById(Integer id);
    //查全部
    List<Student>findAll();

}
